UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Ahw3r/cWuts1xfwgBD24MF8kDqypJ7VxFxMAczAl1iE=' 
WHERE 
  key_id = '51c7e075fb9447339c6371f91b02f61644d4bab2b5f441808bdc0e11b37b03de' 
  AND (
    token = 'Ahw3r/cWuts1xfwgBD24MF8kDqypJ7VxFxMAczAl1iE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )